Download Quiz 2

ELE338, Electronics I
Quiz 2
Version A
Question 1A
Find the value of x such that the 2 networks show an identical terminal
behavior.
x=0.2
Question 2A
Find the value of y such that the 2 networks show an identical terminal
behavior.
y=0.4
Version B
Question 1B
Find the value of x such that the 2 networks show an identical terminal
behavior.
x=1
Question 2B
Find the value of y such that the 2 networks show an identical terminal
behavior.
y=2
ELE338, Electronics I
Quiz 2
Version A
Silicon has been doped with Arsenic, a column 3 element. The resulting
doping concentration is 1.5x1022 m-3. (T=300K and ni=1. 5x1016 m-3).
Question 3A
What is the concentration of free holes in the doped material?
p=1.5x1022 m-3
Question 4A
What is the concentration of free electrons in the doped material?
n=1.5x1010 m-3
Version B
Silicon has been doped with Phosphorus, a column 5 element. The resulting doping concentration is 1.5x1021 m-3. (T=300K and ni=1. 5x1016 m-3).
Question 3B
What is the concentration of free holes in the doped material?
p=1.5x1011 m-3
Question 4B
What is the concentration of free electrons in the doped material?
n=1.5x1021 m-3
ELE338, Electronics I
Quiz 2
Version A
A capacitor is a circuit element that is defined by a constant ratio of
..………. per voltage.
Question 5A
What is the missing word in the above definition?
electric Charge
Question 6A
What is the equivalent circuit of an ideal inductor at dc?
short circuit
Version B
An inductor is a circuit element that is defined by a constant ratio of
..………. per current.
Question 5B
What is the missing word in the above definition?
magnetic Flux
Question 6B
What is the equivalent circuit of an ideal capacitor at dc?
open circuit
ELE338, Electronics I
Quiz 2
Version A
Question 7A
Find the missing parameter in the following equation:
Jdrift=q n n …
Electric Field E
Question 8A
Silicon has a bandgap energy of 1.12 eV, Germanium has a bandgap
energy of 0.67 eV.
Which of these two semiconductor materials exhibits the wider thermal
range for practical use as a semiconductor material?
Silicon
Version B
Question 7B
Find the missing parameter in the following equation:
Jdiffusion=q Dn …
Gradient dn/dx
Question 8B
How many valence electrons does silicon have?
4
ELE338, Electronics I
Quiz 2
Version A
Question 9A
Find a value for Ir if Vs is a dc voltage of 8 V.
Ir=1.9 mA
Question 10A
What is the value of the diode current Id if Vs is a dc voltage of 8 V?
Id=0.4 mA
Version B
Question 9B
Find a vale for Ir if Vs is a dc voltage of 4 V
Ir=0.7 mA
Question 10B
What is the value of the diode current Id if Vs is a dc voltage of 4 V?
Id=2.6 mA